3D printer



FIG. 1 is a perspective view of a 3D printer showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view, with the 3D printer open, in an alternate condition of use.

The broken lines shown represent unclaimed environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a 3D printer, as shown and described. 